Graphical user interface for a display screen



FIG. 1 is a front view of an embodiment of a graphical user interface for a display screen; and,

FIG. 2 is the same as FIG. 1 and depicts the interaction of the graphical user interface of the display screen with environmental elements.

The broken line showing of the display screen is included for the purpose of illustrating environmental structure, and the broken line showing of objects in and around the claimed features is included for the purpose of illustrating portions of the article, and forms no part of the claimed design. 

CLAIM The ornamental design for a graphical user interface for a display screen, as shown and described. 